> The issue isn’t simply whether or not ITA worked – the problem is that no one really knows. For all its scale and ambition, the experiment was never followed

> The issue isn’t simply whether or not ITA worked – the problem is that no one really knows. For all its scale and ambition, the experiment was never followed by a national longitudinal study. Indeed, another tale of pure waste. How many of the opposite experiments are there? Is there at least 1 perfectly set up non-trivial experiment that added definitive knowledge in this sphere?